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An iron-based Fischer-Tropsch synthesis catalyst, its preparation method and application, and a method for synthesis gas Fischer-Tropsch synthesis

A catalyst and Tropsch synthesis technology, which is applied in the field of iron-based Fischer-Tropsch synthesis catalysts, can solve the problem of high conversion rate of the catalyst in one pass, and achieve the effects of increasing life, reducing loss, and improving activity and selectivity

Active Publication Date: 2020-08-14
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The single-pass conversion rate of the catalyst prepared by this method is relatively high, and the conversion rate of CO is closely related to that of Fe in the iron salt solution. 2+ Volcanic Curve Relationship

Method used

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  • An iron-based Fischer-Tropsch synthesis catalyst, its preparation method and application, and a method for synthesis gas Fischer-Tropsch synthesis
  • An iron-based Fischer-Tropsch synthesis catalyst, its preparation method and application, and a method for synthesis gas Fischer-Tropsch synthesis
  • An iron-based Fischer-Tropsch synthesis catalyst, its preparation method and application, and a method for synthesis gas Fischer-Tropsch synthesis

Examples

Experimental program
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Effect test

Embodiment 1

[0083] This example illustrates the method for preparing an iron-based Fischer-Tropsch synthesis catalyst of the present invention.

[0084] (1) Weigh 5kg of Fe(NO 3 ) 3 9H 2 O and 150g of Cu(NO 3 ) 2 ·3H 2 O, after mixing, add deionized water to dissolve, and make the first aqueous solution containing 5% by weight of ferric nitrate and 1% by weight of copper nitrate;

[0085] Weigh 2.5kg of Na 2 CO 3 Add deionized water and stir to dissolve, be made into aqueous solution containing 5% by weight of sodium carbonate, then add 0.1kg of K 2 SiO 3 (SiO 2 The mass content is 35% by weight) stirring and dissolving as the second aqueous solution;

[0086] Add the above two solutions into the precipitator in parallel to carry out the co-precipitation reaction. The temperature of the co-precipitation reaction is kept at 75°C, and the pH value of the obtained precipitation solution is controlled at about 7.5; the obtained precipitation solution is aged for 30 minutes, and then...

Embodiment 2

[0102] This example illustrates the method for preparing an iron-based Fischer-Tropsch synthesis catalyst of the present invention.

[0103] (1) Weigh 5kg of Fe(NO 3 ) 3 9H 2 O and 150g of Cu(NO 3 ) 2 ·3H 2 O, after mixing, add deionized water to dissolve, and make the first aqueous solution containing 5% by weight of ferric nitrate and 1% by weight of copper nitrate;

[0104] Weigh 2.5kg of Na 2 CO 3 Add deionized water and stir to dissolve, be made into aqueous solution containing 5% by weight of sodium carbonate, then add 0.2kg of K 2 CO 3 stirring and dissolving as the second aqueous solution;

[0105] Add the above two solutions into the precipitator in parallel to carry out co-precipitation reaction. The temperature of the co-precipitation reaction is kept at 90°C, and the pH value of the obtained precipitation solution is controlled at about 4; the obtained precipitation solution is aged for 9 hours, and then carried out Filter and wash at least once to obtain...

Embodiment 3

[0112] This example illustrates the method for preparing an iron-based Fischer-Tropsch synthesis catalyst of the present invention.

[0113] (1) Weigh 5kg of Fe(NO 3 ) 3 9H 2 O and 150g of Cu(NO 3 ) 2 ·3H 2 O, after mixing, add deionized water to dissolve, and make the first aqueous solution containing 5% by weight of ferric nitrate and 1% by weight of copper nitrate;

[0114] Weigh 2.5kg of Na 2 CO 3 Add deionized water and stir to dissolve, be made into aqueous solution containing 5% by weight of sodium carbonate, then add 0.1kg of K 2 SiO 3 (SiO 2 The mass content is 35% by weight) stirring and dissolving as the second aqueous solution;

[0115] Add the above two solutions into the precipitator in parallel to carry out the co-precipitation reaction. The temperature of the co-precipitation reaction is kept at 20°C, and the pH value of the obtained precipitation solution is controlled at about 10.5; the obtained precipitation solution is aged for 2 hours, and then c...

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Abstract

The invention relates to the field of iron-based Fischer-Tropsch synthesis catalysts, and discloses an iron-based Fischer-Tropsch synthesis catalyst, its preparation method and application, and a method for synthesis gas Fischer-Tropsch synthesis. Recombinant mass ratio of iron-based Fischer-Tropsch synthesis catalyst Fe:Cu:K:SiO 2 : Na is=100: (0.1~10): (0.1~10): (1~30): (0 or 0.01~10), wherein the total pore volume of the catalyst is 0.05~1.5cm 3 / g, the pore volume of pores with an average pore diameter less than 2 nm is less than 1% of the total pore volume, the pore volume of pores with an average pore diameter of 2 to 11 nm is 1 to 20% of the total pore volume, and the average pore diameter is greater than 11 nm. The pore volume is 79-98% of the total pore volume. This catalyst can improve the Fischer-Tropsch synthesis product C 5 + Product yield.

Description

technical field [0001] The invention relates to the field of iron-based Fischer-Tropsch synthesis catalysts, in particular to an iron-based Fischer-Tropsch synthesis catalyst, a preparation method and application thereof, and a synthesis gas Fischer-Tropsch synthesis method. Background technique [0002] Fischer-Tropsch Synthesis (Fischer-Tropsch Synthesis) technology is a key technology in the process of indirect coal liquefaction and natural gas to synthetic oil. It will use CO and H 2 The main syngas is converted to hydrocarbons. Fischer-Tropsch synthesis uses cobalt-based or iron-based catalysts. Precipitated iron catalyst is an early catalyst used in Fischer-Tropsch synthesis. It has excellent conversion activity and a wide reaction temperature range, and is suitable for both fixed-bed reactors and slurry-bed reactors. The main product is long-chain heavy hydrocarbons, which can be processed to produce high-quality diesel oil, gasoline, kerosene, lubricating oil, para...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/78C10G2/00
CPCC10G2/332B01J23/78B01J37/0201B01J37/031B01J37/08C10G2300/70B01J35/615B01J35/635B01J35/647
Inventor 刘庆华常海郭秀盈武鹏吕毅军胡云剑田博门卓武李永龙
Owner CHNA ENERGY INVESTMENT CORP LTD
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